382 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Le found on all the West Indian islands. In Cuba called “pata de gallina” 
and “ grama de caballo.” 
84. DACTYLOCTENIUM Willd. 
Spikelets as in Eleusine, but the glumes and lemmas mucronate or awn- 
tipped ; apex of the rachis extending as a point beyond the spikelets. 
1. Dactyloctenium aegyptium (L.) Richt. Pl. Eur. 1: 68. 1870. 
CROWFOOT GRASS. 
Cynosurus aegyptius L. Sp. Pl. 72. 1753. 
Dactyloctenium meridionale Hamilt. Prodr. Pl. Ind. Occ. 6. 1825. 
A weedy stoloniferous, more or less pilose annual, often forming dense mats, 
the flat culms 10 to 50 cm. long, the blades flat, usually short, the spikes 2 to 
4, short, thick, radiate at the apex of the culm. 
Open greund and waste places. A common weed in warm countries. Intro- 
duced in America; originally described from “Africa, Asia, America.” To be 
found on all the West Indian islands. In Cuba called “ pata de gallina.” 
85. LEPTOCHLOA Beauv.” 
Spikelets few to many-flowered, short-pedicellate, appressed, loosely imbri- 
cate along a narrow rachis, forming slender racemes, these numerous in an 
elongate panicle; glumes and lemmas keeled, the lemmas 3-nerved. 
Plants annual, 
Sheaths, at least the upper, papillose-hispid_ 1. L. filiformis. 
Sheaths glabrous. 
Spikes distinctly unilateral, numerous and crowded in a narrow elon- 
gate inflorescence; sheaths minutely scabrous______ 2. L. scabra. 
spikes indistinctly unilateral, few to several in a somewhat flabellate 
inflorescence; sheaths smooth. 
Lemmas bearing a delicate awn __~_~-__-_ ee] 3. L. fascicularis. 
Lemmas awnless or minutely mucronate___~______ 4. L. uninervia. 
Plants perennial. 
Spikes slender, 15 to 20 cm. long, the spikelets rather distant; collar densely 
hirsute —~~-~-- 8. L. longa. 
Spikes mostly less than 10 cm. long, the spikelets crowded; collar glabrous 
or slightly pubescent. 
Spikes 2 to 3 cm. long, appressed in a long narrow inflorescence ; lemmas 
awnless___---_-__-_--- ee 5. L. nealleyi. 
Spikes mostly over 5 cm. long, somewhat flexuous and spreading in an 
oblong or flabellate inflorescence; lemmas mucronate or awned. 
Sheaths and blades glabrous, usually somewhat glaucous; awnless 
or the awns shorter than body of lemma______ 6. L. virgata. 
Sheaths sparsely papillose-hispid; blades sparsely villous on the 
upper surface near the base; awns or some of them about as 
long as their lemmas_________-_-_-_- 7. L. domingensis. 
1. Leptochloa filiformis (Lam.) Beauy. Ess. Agrost. 71, 166. 1812. 
Festuca filiformis Lam. Tabl. Encyel, 1: 191. 1791. 
Eleusine mucronata Michx. Fl. Bor. Amer. 1: 65, 1803. 
Rabdochloa? mucronata Beauv. Ess. Agrost. 84, 176. 1812. 
*For an account of the North American species see A. S, Hitchcock, North 
American species of Leptochloa. U.S. Dept. Agr. Bur. Pl. Ind, Bull. 38. 1903, 
